# Friction

**Classical Mechanics**Level 3

In the above figure it is known that when the blocks are released, they slide. Find the time (in seconds) when the small block will fall off the larger block.

**Details and Assumptions**

Assume the size of block of mass \(m\) to be very small.

\(m=1 \text{ kg}\), \(M=4 \text{ kg}\), \(l=4 \text{ m}\), \(\theta=\tan^{-1}\left(\dfrac{3}{4}\right)\), \(\mu=0.4\)